Java For Mac Os 9
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You can determine which version of the JDK is the default by entering java -version in a Terminal window. If the installed version is 9 Minor 1, Security 1, Patch 1, then you see a string that includes the text 9.1.1.1. For example:
Some applications use /usr/bin/java to call Java. After installing Java for macOS 2012-006, /usr/bin/java will find the newest JDK installed, and will use that for all of the Java-related command-line tools in /usr/bin. You may need to modify those applications to find Java 6, or contact the developer for a newer version of the application.
RequirementsImageJ requires Macintosh Runtime for Java (MRJ), available from www.apple.com/java/. MRJ requires Mac OS 8.1 or later. MRJ is preinstalled on new Macs. Older versions of MRJ had many bugs so users of older Macs may need to upgrade to the latest version. ImageJ will run on a 64MB Mac but it runs better with 256MB or more, particularly when working with large images and/or stacks.
We need to be super attentive and careful as it is very useful in understanding java on any machine. Now we need to change the path of Java on Mac, for which certain steps are to be followed these steps :
If you have a modern Oracle version of Java, you can tell from the command line by typingjava -versionin Terminal. Currently, this should produce a response such asjava version "9.0.1"Java(TM) SE Runtime Environment (build 9.0.1+11)Java HotSpot(TM) 64-Bit Server VM (build 9.0.1+11, mixed mode)
$ java -versionopenjdk version "11.0.11" 2021-04-20 LTSOpenJDK Runtime Environment Zulu11.48+21-CA (build 11.0.11+9-LTS)OpenJDK 64-Bit Server VM Zulu11.48+21-CA (build 11.0.11+9-LTS, mixed mode)
$ zulu8.52.0.23-ca-jdk8.0.282-solaris/bin/java -versionopenjdk version "1.8.0_282"OpenJDK Runtime Environment (Zulu 8.52.0.23-CA-solaris) (build 1.8.0_282-b08)OpenJDK 64-Bit Server VM (Zulu 8.52.0.23-CA-solaris) (build 25.282-b08, mixed mode)
However, the way a java software interacts with Mac-specific functions (suchas the Application Preference, and the way to open a file by clicking onit), has dramatically changed from java 8 to java 9.
Inspired by a Jfokus session I attended today I decided to download and install a preview of Java 9 on my MacBook.That went pretty quick and without much trouble.But when I issued java -version on my terminal, I was greeted with
I will also try to build the same VTK version under Windows, in order to check whether the .java files are compiled into .class files there, and the vtk.jar archive is finally produced under that platform.
Now we will install rJava in R. Before that, run R CMD javareconf in terminal. If it asks you to enter y/n, just type y and hit enter. Now go to R/RStudio, run install.packages('rJava', type='source'). The installation should run smoothly.
Install the latest stable version of your SDK of choice (say, Java JDK) by running the following command: $ sdk install java You will see something like the following output: Downloading: java 17.0.6-temIn progress...######################################################################## 100.0%Installing: java 17.0.6-temDone installing! Now you will be prompted if you want this version to be set as default. Do you want java 17.0.6-tem to be set as default (Y/n): Answering yes (or hitting enter) will ensure that all subsequent shells opened will have this version of the SDK in use by default. Setting java 17.0.6-tem as default.
Using a snapshot version Already have a local installation Setup a local version by specifying the path to the local installation: $ sdk install groovy 3.0.0-SNAPSHOT /path/to/groovy-3.0.0-SNAPSHOT $ sdk install java 17-zulu /Library/Java/JavaVirtualMachines/zulu-17.jdk/Contents/Home Note that the local version name (3.0.0-SNAPSHOT and 17-zulu in the examples above) must be a unique name which is not already in the list of available version names.
To see what is currently in use for a Candidate: $ sdk current javaUsing java version 17.0.6-tem To see what is current